MARSHFIELD - Police issued a bulletin on Friday about a 17-year-old Marshfield boy who hasn't been seen or heard from since he left home Thursday.

They later updated the notice to report that a vehicle matching the one he was driving was spotted in western Wisconsin.

Michael D.C. Atkins was last seen about 4 p.m. Thursday when he left home without his cellphone, wallet or "essential medication," according to a safety alert issued by the Marshfield Police Department. He was driving a gray 2006 Pontiac Vibe with the license plate of 339 XRJ.

"Michael failed to report to work later that afternoon," the alert said. "Since leaving his residence Michael has failed to contact any family, friends or employer."

The car with the same plate number was seen at a convenience store in Wilson around 11:20 a.m. Friday, the updated bulletin said. The convenience store is near Interstate 94 in St. Croix County. Police said they don't know which way the vehicle was traveling but noted that Atkinson "may have associates" in the nearby Hudson area.

Atkins is described as a black male, 5-feet 8 inches tall, weighing about 120 pounds with hair that is shaved on the sides and long and curly on top.